57. And it is He Who sends the winds as heralds of glad tidings, going before His Mercy (rain). Till when they have carried a heavy-laden cloud, We drive it to a land that is dead, then We cause water (rain) to descend thereon. Then We produce every kind of fruit therewith. Similarly, We shall raise up the dead, so that you may remember or take heed.

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Tafsir Ibn Kathir Volume 4, Page

Here, Allah said that He sends the wind that spreads the clouds that are laden with rain. Allah said in another Ayah,

﴿وَمِنْ ءَايَـتِهِ أَن يُرْسِلَ الرِّيَـحَ مُبَشِّرَتٍ﴾

And among His signs is this, that He sends the winds with glad tidings (30:46)